Plant transpiration efficiency at a given location is markedly influenced by:
A) tillage practices used.
B) organic residue cover on the soil.
C) fertilization practices used.
D) the plant species being grown.
E) both C and D
Question 2
Allelopathic chemicals, once added to soil, usually make the affected soil unsuitable for any plant life for periods of years.
Indicate whether the statement is true or false